With Natural Resin Or Derivative Patents (Class 106/145.2)
  • Rosin emulsion including starch derivative for paper sizing
    Patent number: 6290765
    Abstract: A “one-shot” composition for use in paper sizing comprises an admixture of a rosin emulsion, a soluble aluminium salt and a cationic starch derivative which has a charged state of 1.0 to 3.5 m equivalents per gramme and which is produced by a process in which the starch structure was split prior to the cationising step.
    Type: Grant
    Filed: November 8, 1999
    Date of Patent: September 18, 2001
    Assignee: Raisio Chemicals Limited UK
    Inventors: Michael James Jaycock, Martin Derek Phillipson, Claes Zetter, Tapio Vihervaara